Your objective
Fill every row, column and 3×3 box with digits 1 through 9 exactly once.
Standalone · Puzzle
Sudoku
A classic 9×9 number-placement logic puzzle.
Reviewed game guides
What to expect
Controls
Select an empty cell, then choose or type a number; use notes if available.
A useful first strategy
Start with rows or boxes missing only one or two digits.
Who may enjoy it
Players who enjoy deduction without time pressure.
Evidence
Sources reviewed
Descriptions are independently summarized from the references below. Availability can change.